<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2019\6\15 0015
 * Time: 17:04
 */

namespace BigVideo\IMooc\Evrnt;


class Observer2 implements Observer
{
    public function update($event_info = null)
    {
        //观察者1逻辑处理
        echo "逻辑2s<br/>\n";
    }
}